Suggestion: Support to encrypt on license key

Problem/Motivation

Congrats in the project. Here my suggestion is to think about a way to save the license key with encrypt

Steps to reproduce

Go to the config area
The license key is open to people who has access into admin site configuration
this is ok, but will be nice to have a way to encrypt these kind of values

Proposed resolution

We can think about to integrate with https://www.drupal.org/project/encrypt →

Remaining tasks

User interface changes

API changes

Data model changes